Traverse motion for spinning or twisting frames



Dec 17, 1935- vFgK. HENDRICKSON 2,02 ,447

TRAVERSE MOTION FOR SPINNING OR TWISTING FRAMES Filed Jan. 8, 1934 3Sheets-Sheet 1 I NVEN TOR.

ATTORNEYS.

Dec. 17, 1935- F. K. HENDRICKSON TRAVERSE MOTION FOR SPINNING ORTWISTING FRAMES 3 Sheets-Sheet 2 INVENTOR.

Filed Jan. 8, 1.934

1935' F. K. HENDRICKSON 2,024,447

TRAVERSE MOTION FOR SPINNING OR TWISTING FRAMES File Jan- 1934 3Sheets-Sheet 3 W a" w i INVENTOR.

v ATTORNEYS.

Patented Dec. 17, 1935 UNITED STATES PATENT OFFICE TRAVERSE MOTION FORSPINNING on TWISTING FRAMES Application JanuaryS, 1934, Serial No.705,779

5 Claims.

This invention relates to spinning or twisting frames in which parts ofthe drawing mechanism are regularly traversed or reciprocated during theoperation of the machine.

. I have shown my invention embodied in a spinning frame in which thedrawing rolls and associated parts are reciprocated relative to thetwister heads through which the yarn is fed to the rolls. V r

In previous commercial traverse motions, it has .been customary toeffect reciprocation. by an eccentric or crank motion. Such priortraverse motions have had a fixed locus of travel for the reciprocatedparts and have also had a pronounced dwell on reversal at each end ofthe path of travel. Consequently, the wear on the rolls takes placewithin definite fixed limits and the dwell on reversal causes excessivewear at the two ends of the path of travel, eventually producing groovesin the rolls and. particularly damaging the cushioned surface of thepressor or tension rolls.

It is the general object of my invention to provide an improved traversemotion so constructed that the locus of reciprocation will beprogressively shifted and that the dwellon reversal will besubstantially eliminated.

To the accomplishment of this object, I provide a specially designed camfor reciprocating the moving member, and I provide additional means bywhich the operating locus of the cam will be progressively'changed.

My invention further relates to arrangements and combinations of partswhich will be hereinafter described and more particularly pointed out inthe appended claims.

A preferred form of the invention is shown in the drawings, in whichFig. 1 is a sectional end elevation of parts of a wool spinning frameembodying my improvements, the section being taken along the line II inFig. 2;

Fig. 2 is a partial front elevation, looking in the direction of thearrow 2 in Fig. 1;

Fig. 3 is a plan view of my improved traverse motion;

Fig. 4 is a partial end elevation, looking in the direction of the arrow4 in Fig. 3;

Fig. 5' is a sectional end elevation, taken along .the line 5-5 in Fig.3;

Fig. 6 is a sectional side elevation, taken along the line 6-6 in Fig.3, and a Referring to the drawings, I have shown parts of a Woolspinning frame including twister heads It (Figs. 1 and 2) continuouslyrotated by driving belts Ii, upper and lower drawing rolls I2 and I3,pressor rolls it, tension levers I5 and 5 tension Weights I6.

All of these parts are of commercial construction and in themselves formno part of my present invention, which relates particularly to the meansfor reciprocating the drawing rolls I2 and '10 I3 and preferably alsothe pressor rolls I4, tension levers i5 and weights I6.

The upper drawing roll I2 is supported for axial movement in fixedbearings in stands I8 (Fig. 2), and is extended to the right in Fig. 2to 15 the head end of the machine, where suitable driving connectionsare provided. The lower drawing roll I3 is also slidably supported infixed bearings in the stands I3, and is connected by a pinion 20, anintermediate gear 2| and a sec- 20 0nd pinion 22 to the power-drivendrawing roll I2. Through these connections the'rolls are simultaneouslyrotated in the same direction and at the same speed.

Traverse heads 25 (Figs. 2 and 4) are mounted 25 on the rolls i2 and I3and are held from axial movement relative thereto by flanges 26 andcollars 21 on the rolls I2 and I3. Both rolls are, however, free torotate in the associated head 25.

The tension levers it are mounted between collars 30 (Fig. 2) onlongitudinally extending rods 35 slidable in fixed bearings and securedat one end by lock nuts 32 to the traverse heads 25.

With this construction it will be seen that re- 35 ciprocation of theheads 25 will effect axial movement of the drawing rolls I2 and I3 andalso of the rods SI supporting the tension levers I5. It will also beevident that the levers I5 through links 33 (Fig. 1) axially positionthe pressor rolls It, so that these rolls also are reciprocated with theheads 25.

I have shown twister heads, drawing rolls and associated parts for oneside only of the ma- 45 chine but it will be understood that these partsare ordinarily duplicated at the opposite side of the machine, asindicated at I2, I3 and 25 (Fig. 3).

I will now describe the improved mechanism which I have provided forreciprocating the rolls I2 and I 3, the rods SI and other associatedparts.

For this purpose I have provided a cylindrical cam 46 (Fig. 3) having acam groove 4| in its cylindrical surface. A roll 42 is mounted on a 535bracket 43 secured to a bar 44 slidable in fixed bearings 45. The roll42 is positioned between the side Walls of the groove 4| in the cam 46.

The bar 44 is connected by a link 46 (Fig. 3) to a lever 41 pivoted at48 on the'machine frame, and the lever 41 is connected by segment gearteeth 49 to a similarleverBt mounted on a fixed pivot 5|. The lever 59has a pivoted connection to a block 52 slidable in a recess 53 (Figs. 3and 4) in the traverse head at one side of the machine. The lever 41 issimilarly connected 'to the traverse head 25 at the opposite side of themachine.

From the described constructton it will be evident that endwise movementof the bar 44 through the operation of the cam will be transmittedthrough the levers 41 and 5D to cause simultaneous reciprocating motionsof the traverse heads, drawing rolls and associated parts at both sidesof the machine, and it will be further evident that these drawing rollsand associated parts will move s'tmultaneously at the same speed and inthe same directions.

The cylindrical cam 48 is loosely mounted on a shaft 66 (Fig. 6)slidably supported in fixed bearings 6|. A second cylindrical cam 62 isalso loosely mounted on the shaft and is provided with a cam groove 63in its cylindrical face. The cams 40 and 62 are mounted in abuttingrelation on the shaft 68 and are held from axial movement on the shaftby collars 64. A cam roll 65 is rotatably mounted in a fixed bearing 66and is positioned in the cam groove 83.

The cam 46 is provided with a gear 70 (Fig. 3) meshing with a pinion TIon a continuously rotated driven shaft 12. Consequently the cam 40 iscontinuously rotated, thus reciprocating the bar 44 and causingreciprocating or traverse motions of the drawing rolls l2 and I3 andassociated parts. The cam groove 4| is so designed that dwell of the bar44 and connected parts at the points of reversal of travel issubstantially eliminated, this feature constituting an importantimprovement over the usual eccentric or crank motion operating mechanismfor reasons previously stated.

So long as the cam 62 remains in fixed position, the mechanism willoperate to reciprocate or traverse the drawing rolls, but the traversewill remain between the same limits or, in other words, the locus ofreciprocation will be fixed. If, however, the cam 62 is moved angularlyrelative to the fixed roll 65, the cam 62 and the abutting cam 43 arebodily moved axially and thus the locus of reciprocation is changed.

For thus adjusting the cam 62 angularly, I provide the cam 62 with agear 8|] (Fig. 3) meshing with a pinion 8| loose on the shaft 12previously described but secured to a star wheel 82 also loose on theshaft I2. 7

The cam 40 is provided with a pin 83 (Fig. 5) and with a dwell portion84. These associated parts constitute an intermittent drive for the cam62, being of the general type known as a Geneva stop motion.

The star wheel 82 is provided with six teeth and with six interveningslots and is held from rotation by the dwell portion 84 during a majorportion of each revolution of the cam 40 but is released at one point ineach revolution of the cam 40 and is advanced one space by the pin 83.Consequently at every revolution of the cam 40 the cam '62 is given apartial rotation and the axially.

The pinion 8| and gear are such that each has a prime number of teeth sothat by means of this gearing and the star Wheel 82 the cam 62 is givenseveral hundred successive and distinct axial positions.

Successive positions of the locus of the reciprocating movement ofthedrawing rolls and associated parts, corresponding to the differentpositions of the cams 62 and 40, are clearly shown in the diagrammaticview, Fig. 7.

I have thus providedsimple and reliable mechanism by which the drawingrolls and associated parts on one or both sides of a spinning ortwisting frame may be regularly reciprocated or traversed, and by whichthe locus of the reciprocating movement may be successively shifted todistribute the wear and to prevent the formation of grooves in theyarn-engaging surfaces.

Furthermore, I have provided a cam drive in a traverse motion, sodesigned that dwell at the pointsof reversal is substantiallyeliminated.

My improved mechanism thus avoids serious objections arising in theoperation of the traverse mechanisms heretofore commonly used, and thewear-of the'rolls is substantially lengthened.

Having thus described my invention and the advantages thereof, I do notwish to be limited tothe details herein disclosed, otherwise than as setforth in the claims, but what I-claim is:

1. In a spinning or twistingframe, atraverse member movablelongitudinally of the machine, a cylindrical cam'having an operatinggroove in its cylindrical face, a connection from said cam to saidmember, a second cam associated with said first cam, means tointermittently advance said second cam, anda fixed element cooperatingwith said second cam, whereby angular movement of said second cameffects axial movement of said first cam.

2. In a spinning or twisting frame, a traverse member movablelongitudinally of the machine,

a rotating cam operatively connected to said member, a normallystationary cam, said cams being mounted in fixed axial relation on asupporting shaft, means to rotate said first cam, and means to give saidsecond cam intermittent combined axial and angular advance movements toshift the locus of operation of said first cam progressively axially.

3. In a spinning or twisting frame, a traverse member movablelongitudinally of the machine, a rotating cam operatively connected tosaid member, a normally stationary cam, said cams being mounted in fixedaxial relation on a sup porting shaft, means to rotate said first cam,and means to give said'second cam intermittent combined axial andangular advance movements to shift the locus of operation of said firstcam progressively axially and. in consecutive reversed directions.

4. In a spinning or twisting frame, a traverse member movablelongitudinally of the machine, a cylindrical cam operatively connectedto said member, a second cylindrical cam, said cams being independentlyrotatable about a common axis but being mounted in fixed axial relationto each other and each having a continuous cam groove in its cylindricalsurface, a fixed cam follower positioned in the groove of said secondcam, means to continuously-rotate said first cam, and means :tointermittently advance said second cam -ang1.1larly relative to saidfixed cam follower,

thereby shifting both cams simultaneously axill ally and correspondinglyshifting the locus of reciprocation of said traverse member.

5. In a spinning or twisting frame, a traverse member movablelongitudinally of the machine, a cylindrical cam having an operatinggroove in its cylindrical face and rotatable on a fixed axissubstantially parallel to the path of reciprocation of said traversemember, a connection from said cam to said member, and means to.

shift said cam bodily axially to thereby change the locus ofreciprocation of said traverse member.

FRED K. HENDRICKSON.

